MINE462 Health and Safety

Under the Ontario Occupational Health and Safety Act, an employer must supply their workers with safety boots and hard hats if the job requires it.

A company with 250 employees had 6 LTIs last year. What is the LTIFR?

The TLV-C or CEL can be exceeded...?

A gold mine uses cyanidation as a part of the gold extraction process. What kind of wastewater conditions would you expect in the tailings?

Identify the substance that may create acute lung hazard conditions if found in high concentration in the air

Hydrogen sulfide gas has a distinctive odor that is noticeable at high concentrations (>5%)

Radon has a half life of approx 4 days. How much of the original material of a radon sample will be left after 24 days?

Most common cause of workplace injury?

Which of the following is a confined space

Pale face + cool/moist skin + dizziness = ?

Rights of the worker include?

The only workers who are not covered by the Occupational Health and Safety Act are transient agricultural laborers.

The three principal states of "occupational health" that must be satisfied (ie no departures from well-being) are:

A biologic reaction that occurs within the lungs due to exposure to toxic hazards can create a breakdown of the walls of the alveoli, resulting in enlarged air spaces within the alveoloar region and decreased lung capacity to effectively diffuse oxygen into the blood. This disease is called:

In Ontario, who is responsible for establishing a Joint Health and Safety Committee

What would be the preferred choice for controlling or removing a noisy air compressor?

Which of the following is/are not an ergonomic hazard

Which are not mechanisms of direct entry of toxic substances to the body?

Allergic contact dermatitis is an inflammatory skin disease caused by contact allergens and sensitized skin.

What condition is anemia?

Long term exposure to low levels of CO can cause what?

What is the base assumption of animal testing?

LD50 is the airborne/inhaled concentration that kills 50% of the animal tested

A coal mine explosion requires coal dust in the air in order to occur.

Where is methane gas likely to be found in a coal mine?

The W65 Self-Rescuer works in CO gas environments how?

Why is radon gas dangerous?

Exposure to UV rays can lead to what?

Which process would NOT aid evaporative cooling of the body

Which factor does not contribute to the severity of an arc flash?

What is the JHSC not responsible for?

Ministry of Labour Inspectors do not have the power to do what?

Which of the following is not a supervisor responsibilities?

Order the worker refusal process properly: [blank_start]Step 2:[blank_end] Worker representative from Health and Safety Committee is called [blank_start]Step 4:[blank_end] Ministry of Labour inspector is called [blank_start]Step 3:[blank_end] Supervisor investigates safety hazard [blank_start]Step 1:[blank_end] Work is refused to to a perceived safety hazard

What are supervisors responsible according to the Internal Responsibility System?

What is an employer not legally obliged to provide?

In Ontario, workplaces with less than 20 workers must have a Worker Health and Safety Rep that is selected by the workers.

For a due diligence defense, and OHS system must be in place and operating effectively. Which of the following meets the requirements for an effective OHS system?

The absorption rate of toxic substances through the skin is greater on the forehead than on the abdomen.

The TLV-TWA for nuisance dusts in the workplace is 10 mg/m3. What would be the STEV and CEV

Sulphide ores are [blank_start]an explosive[blank_end] hazard. Radon gas is [blank_start]a carcinogenic[blank_end] hazard. Lead is [blank_start]a toxic[blank_end] hazard. Silica is [blank_start]a fibrogenic[blank_end] hazard. Limestone is [blank_start]a nuisance[blank_end] hazard.

A mine drift with ventilation flow of 15 m3/sec and a radon progeny concentration of 0.6 WL. What airflow is required to dilute it to 0.33 WL.